canon rumors FORUM

If you asked me what aperture I used for my last shot, I may have replied, "A value where the ratio of the apparent focal length with the lens focused to infinity to the physical diameter of the iris diaphragm was equal to two point eight, when rounded to the nearest tenth unit." But maybe I just replied, "Did you like the picture?"

I'm more likely to leave out the "point." Thus, it's "eff two eight" and "eff four." I don't think I'd leave off the "point" for bigger apertures, though...it'd be, "eff five six," but "eff one point four." Not sure why.

For me it is clear too, what he ment.I think, when a photographer sais "I shoot at 2.8" it's clear, that he is talking about the aperture. When he would say "I shot at 4" it could still mean, 4seconds or prob. 1/4 of a second. So we all say "F4". But normally we would also say f2.8, but we are all lazy